<?php 
       $color = array( 
        '#687e9b', 
        '#c4ccd8', 
    ); 
     
    $dataMultiple = array(array(0,1,2,3), array(4,5,6,7)); 
     
    $googleChart->setChartAttrs(  
        array( 
            'type'         => 'bar-vertical', 
            'title'     => '', 
            'data'         => $dataMultiple, 
            'size'         => array( 400, 200 ), 
            'color'     => $color, 
            'labelsXY'     => true, 
            'min'        => array(min(array(0,1,2,3)),min(array(4,5,6,7))), 
            'max'        => array(max(array(0,1,2,3)),max(array(4,5,6,7))), 
            'legend'    => array('2008', '2009') 
        ) 
    ); 
     
    // Print chart 
    echo $googleChart; 
    ?> 